Which of the Following Secretes Milk,sweat,saliva,or Some Other Substance Through

Question

Which of the following secretes milk,sweat,saliva,or some other substance through a duct?  
A) Connective tissue
B) Endocrine gland
C) Connective tissue..
D) Exocrine gland.
E) Microvillus

Accepted Answer

Only exocrine glands secrete substances through ducts, while endocrine glands secrete hormones directly into the bloodstream without the use of ducts. Connective tissue and microvilli do not secrete substances.